Elix J A <br/><br/>
Revision of the Lichen Genus Paraparmelia Elix & J Johnst : Bibliotheca Lichenologica Band 80 .-3-443-58059-9 

 -  J Cramer, Berlin, Germany 
<br/><br/><label>ISBN: </label>3-443-58059-9 
<br/><br/><label>Dewey Class. No.: </label>I27/P01/B24600